Machine for inserting pins into a perforated ribbon



Feb. 4, 1958 H. PEASGOOD 2,821,773

MACHINE FOR INSERTING PINS INTO A PERFORATED RIBBON Filed Nov. 22,, 19552 Sheets-Sheet 1 62600660000000 nu an n a an 0000000000000 Me /Zia? j JJerald je 00d jvfm W v aw H. PEASGOOD Feb. 4, 1958 MACHINE FOR INSERTINGPINS INTO A PERFORATED RIBBON Filed Nov. 22, 1955 2 Sheets-Sheet 2 HaroMas 000! fizz safer United States PatentO MACHINE FOR INSERTING PINS INTOA PERFORATED RIBBON Harold Peasgood, Slough, England, assignor toTechnictfrlgf Corporation, Hollywood, Calif., a corporation ameApplication November 22, 1955, Serial No. 548,514

4 Claims. (Cl. 29--211) This invention relates to a machine forinserting headed pins into a perforated ribbon and more particularly toa machine for mounting register pins in a pin-belt of the type used forregistering cinematographic film. Ordinarily these pins have shankswhich are shaped to fit the sprocket holes of film with flat heads whichseat against the back side of the belt, each shank having an elongatecross-section with the short dimension extending lengthwise of the beltand the long dimension extending crosswise of the belt. The belt isperforated along each edge with perforations substantially the sameshape and size as those of the pin shanks and pins are mounted in bothrows of perforations. While the aforesaid short dimension may be thesame in bothrows of pins, the long dimension of the shanks of one row ofpins is preferably less than that of the other row so as not to fill thefilm perforations transversely of the film.

Heretofore it has been proposed to feed the perforated ribbon past apinning station intermittently and insert a single pin at each step, butthis procedure has been slow and expensive. Objects of the presentinvention'areto increase the rate of inserting the pins, to feed theribbon continuously instead of intermittently, and to insert the pins inboth rows concomitantly.

According to the present invention the machine comprises a carrierhaving a longitudinal row of seats for supporting the pins with theirheads bearing on the seats and their shanks projecting therefrom, thespacing of the seats approximating that of the openings in the belt orother ribbon into which the pins are to be inserted, together with meansfor detachably holding the pins on their seats, means for feeding theribbon to the carrier obliquely so that the shanks enter the openingsand means for pressing the ribbon toward the carrier to seat the ribbonagainst the heads. The means for holding the pins on the seatspreferably comprises a vacuum manifold in the carrier with ducts leadingto the seats. The carrier is preferably in the form of a rotor havingthe aforesaid seats distributed in one or more circumferential rowsabout its periphery, in which case the ribbon is fed to the rotortangentially. The pins may be supplied to the rotor in any suitable way,as by hand, but they are preferably fed automatically by the apparatusdescribed and claimed in the copending application Serial No. 548,515 ofJohn H. Francis filed on Nov. 22, 1955.

For the purpose of illustration a typical embodiment of the invention isshown in the accompanying drawings in which Fig. 1 is a plan view of themachine;

Fig. 2 is a front elevation of the machine;

Fig. 3 is a section on line 3-3 of Fig. 1;

Fig. 4 is a section on line 4-4 of Fig. 3;

Fig. 5 is a section on line 5-5 of Fig. 3;

Fig. 6 is a section on line 6-6 of Fig. 4; and

Fig. 7 is a plan view of a typical pin for use in registeringcinematographic films.

In the illustration the pins have flat circular bases 1 and shanks 2 forinsertion through a ribbon R with the heads of the pins seating againstone side of the ribbon as shown in Fig. 4. As shown in Figs. 1 and 7 theshanks have an elongate cross-section with the short dimension extendinglengthwise of the ribbon and the long dimension extending crosswise ofthe ribbon. For use in registering cinematographic film the longdimensions of the shanks correspond to the long dimensions of the filmperforations along one edge of the ribbon and along the other edge ofthe ribbon the long dimension of the shanks is somewhat less so thatthey do not fill the film perforations crosswise of the film. In Figs. 1and 2 the full-fitting pins are applied to the ribbon R along itsleft-hand margin and the smaller pins are applied to the ribbon alongthe right-hand margin.

According to the present invention the pins are placed in recessed seats3 distributed in two circumferential rows around the periphery of arotor 4 on shaft 5 with their heads fitting loosely in the seats andtheir shanks projecting radially from the rotor (Figs. 1, 2 and 3). Asshown in Fig. 3 the rotor turns in a counterclockwise direction, thepins are presented to it at the right-hand side and they are insertedinto the ribbon at the top, the ribbon being fed tangentially to therotor between a support 6 and a guide roller 7. While being carried bythe rotor the pins are held in their seats by vacuum means communicatingwith the seats through a pipe 8, manifold 9 and ducts 11, the manifold 9being disposed in the stationary frame 12 and extending from the pointwhere the pins are applied to the rotor to the point where they areinserted in the belt (Figs. 3 and 5). As the ribbonapproaches the rotortangentially the pins gradually enter the perforations in the ribbonwhich is backed by rollers 13 journaled in the support 14 which ismounted on the frame 12 by means of screws 16, the rollers hav-, inggrooves 17 to accommodate the tips of the pin shanks as they areinserted through the ribbon.

After the ribbon has been applied to the pin shanks it is pressedagainst the pin heads by means of a roller 18 above the rotor, theroller having recesses 19 in its edges to accommodate the projectingtips of the pins. The roller 18 is driven by means of a crank 21 througha shaft 22, worm 23, worm wheel 24, and shaft 26 (Figs. 1, 2 and 4). Tofacilitate threading the ribbon between the rotor 4 and roller 18 theshaft 26 is journaled in blocks 27 and 28 which are mounted in recessesin the frame 12 by means of screws 29. By loosening the screws the shaft26 may be tipped to the position shown in Fig. 4 where the ribbon may beinserted edgewise between the rotor and roller. The rotor shaft 5 isdriven from the roller shaft 26 through gears 31 and 32. The gear 31 isattached to the shaft 26 through a collar 33, the gear 31 being securedto the collar by means of pins 34 extending through slots 36 in thecollar and threading into the gear 31 (Figs. 4 and 6). To bring theroller 18 in synchronism with the rotor 4, so that the projecting pinshanks will register with the recesses 19, the gear 31 is adjustablecircumferentially of the collar 33 by means of a pin 37 rotatablymounted in the collar and having an eccentric portion 38 extending intoa radial slot 39 in the gear. By loosening the screws 34 and rotatingthe pin 37 the roller 18 may be brought into exact synchronism with therotor 4, after which the screws 34 are tightened to hold the parts insynchronism. In lifting the shaft 26 for threading purposes, asillustrated in Fig. 4 and as above described, the gear 31 may be left inmesh with the gear 32 so that the parts need not be thrown out ofsynchronism in threading the machine.

The pins may be applied to the rotor 4 by hand as the seats 3 arriveopposite the manifold 9 but they are preferably supplied by automaticmeans such as disclosed in the aforesaid application. In theillustration the aforesaid smaller pins are applied to the right-handrow of seats 3 (Figs. 1 and 2) and the full-fitting pins are applied tothe left-hand row of seats.

It should be understood that the present disclosure is forthe purpose ofillustration only and that this invention includes all modifications andequivalents which fall within the scope of the appended claims.

I claim:

1. For inserting into a ribbon having a row of openings, pins havingshanks projecting through the openings with heads seating on one side ofthe ribbon around the open ings, a machine comprising a support, movablymounted on the support a carrier having a row of seats for supportingsaid pins with their heads bearing on the seats and their shanksprojecting therefrom, the spacing of the seats approximating that of theopenings in the ribbon, means for detachably holding the pins on theirseats, said row extending in a predetermined direction, means for movingthe carrier in said direction, means for feeding the ribbon to thecarrier synchronously with the carrier so that said shanks enter saidopenings sequentially, and means on said support for pressing the ribbontoward the carrier to seat the ribbon against said heads.

2. For inserting into a ribbon having a row of openings, pins havingshanks projecting through the openings with heads seating on one side ofthe ribbon around the openings, a machine comprising a support, movablymounted on the support a carrier having a row of seats for supportingsaid pins with their heads bearing on the seats and their shanksprojecting therefrom, the spacing of the seats approximating that of theopenings in the ribbon, the carrier containing a vacuum manifold withducts leading to said seats for detachably holding the pins on theirseats, said row extending in a predetermined direction, means for movingthe carrier in said direction, means for feeding the ribbon to thecarrier synchronously with the carrier so that said shanks enter saidopenings sequentially, and means on said support for pressing the t 4ribbon towardthe carrier to seat the ribbon against said heads.

3. For inserting into a ribbon having a row of openings pins havingshanks projecting through the openings with heads seating on one side ofthe ribbon around the openings, a machine comprising a support,rotatably mounted on the support a rotor having on its periphery acircumferential row of seats for supporting said pins with their headsbearing on the seats and their shanks projecting radially, thecircumferential spacing of the seats approximating that of the openingsin the ribbon, means for detachably holding the pins on their seats,means for feeding the ribbon to the rotor tangentially so that saidshanks enter said openings, and means on said support for pressing theribbon toward the rotor to seat the ribbon against said heads.

4. For inserting into a ribbon having a row of openings pins havingshanks projecting through the openings with heads seating on one side ofthe ribbon around the openings, a machine comprising a support,rotatably mounted on the support a rotor having on its periphery acircumferential row of seats for supporting said pins with their headsbearing on the seats and their shanks projecting radially, thecircumferential spacing of the seats approximating that of the openingsin the ribbon, the rotor containing a vacuum manifold with ducts leading to said seats for detachably holding the pins on their seats, meansfor feeding the ribbon to the rotor tangentially so that said shanksenter said openings, and means on said support for pressing the ribbontoward the rotor to seat the ribbon against said heads.

References Cited in the file of this patent UNITED STATES PATENTS2,171,193 Ruau Aug. 29, 1939 2,356,291 Whittaker Aug. 22, 1944 2,698,478Heisterkamp Jan. 4, 1955

